How can overfishing lead to ecosystem collapse?

A. Reducing fish populations reduces sediment flow to the oceans.

B. Reducing the fish population also removes the fish and mammals that eat them.

C. Fish have reached their carrying capacity.

D. Fish are a source of biomass, which is a major source of energy in the United States.

Answer: Option B

Explanation:

Over fishing can lead to ecosystem collapse because it will reduce the number of fishes in large numbers. There are many other aquatic animals that depends on fishes as a source of energy.

The big fishes like whale and sharks depends on smaller fishes for food. Reduction in the number of fishes will decrease the number of mammals and fishes that eats fish as food.

B-Reducing the fish population also removes the fish and mammals that eat them.